List of Famous people who are 40

Johan Vansummeren is a Belgian former professional road racing cyclist, who rode professionally between 2004 and 2016 for the Relax–Bodysol, Silence–Lotto, Garmin–Sharp and AG2R La Mondiale teams.

Viktor Hennadiyovych Ruban is an Olympic gold medal winning former world number one Ukrainian archer.

Naresh Iyer is an Indian playback singer. Born in a Tamil speaking family from Mumbai, Iyer is fluent in Tamil, Kannada, Hindi and Marathi. Naresh Iyer has rendered film songs in several Indian languages and has several chart hits to his credit. His rendition of "Roobaroo" from the movie Rang De Basanti composed by A. R. Rahman topped the music charts for many weeks in 2006 and won him the National Film Award for Best Male Playback Singer. He also won the Filmfare award in the R.D. Burman Musical Talent category. He is one of the few playback singers to have won both a Filmfare Award and a National Award in his professional debut singing year.

Heikki Johannes Kovalainen is a Finnish racing driver. He raced in Formula One between 2007 and 2013 for the Renault, McLaren, Team Lotus, Caterham and Lotus F1 teams, scoring a single victory at the 2008 Hungarian Grand Prix. Since then, he has raced in the Japanese Super GT series, where he won the championship in 2016. In August 2020, a computer program listed Kovalainen as the 8th fastest qualifying driver from 1983 to 2020.